What is a cartilaginous, skeletal rod, supporting the body in all embryonic and some adult chordate animals?

Animals that have a backbone (vertebral column) are known as:

Sand Dollars and Sea Urchins have all of the following except

What are the jaw-like pinchers used to clean the surface, defend against larger organisms or for grasping prey?

On average, echinoderms have a life span lasting

What is the unique masticatory apparatus inside the mouth of most echinoderms?

What is the dorsal region of a starfish that does NOT contain the mouth?

What do sea urchins use to defend against predators?

What class does this organism belong to?

What class does this organism belong to?

What does Echinodermata mean in Greek?

The image depicts the development of what type of organism?

According to the cladogram, mammals evolved during what period?

Where are echinoderms found?

How do starfish move as adults?

Which stomach do starfish evert into an organism and release digestive enzymes for out-of body digestion?

All of the following are true regarding reproduction in echinoderms except

Starfish Lack excretion and osmoregulation organs and use nephridia to move nitrogenous waste out of their systems.

All of the following are true regarding the nervous system of echinoderms except

Process of asexual reproduction in which the central disc divides roughly in two and forms a complete animal by regeneration

Circulation and gas exchange in echinoderms is accomplished by all of the following EXCEPT:

The calcareous endoskeleton made of plates or ossicles with protruding spines is known as

What group of animals is distinguished by two traits: a column of cartilaginous or bony structures that form along the dorsal sides of most species and a cranium?

Vertebrates have a well developed coelom including a pericardial cavity to hold the heart and a pleuroperitoneal cavity to hold what organs?